CVE Database›CVE-2026-2739

CVE-2026-2739

bn.js: bn.js: Denial of Service via calling maskn(0)

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Severity

Moderate

Red Hat Product Security

5.3

CVSS 3.1

Review impact separately from score.

Published · February 20, 2026

Updated · November 1, 2026

Description

A flaw was found in bn.js. When calling the maskn(0) function on a BN instance, there is potential for this action to corrupt the internal state of the library, causing critical methods such as toString() and divmod() to enter an infinite loop. The primary consequence is a Denial of Service (DoS), where the affected process hangs indefinitely.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 5.3
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

CWE-835 · Loop with Unreachable Exit Condition